Renthal Rear Sprocket, 51-Tooth Aluminum, Purple (123U-520-51GYPE)

Upgrade your motorcycle’s final-drive performance with the Renthal 123U-520-51GYPE rear sprocket. CNC-machined rather than stamped, this 51-tooth sprocket is engineered with a computer-aided ultra-light design that helps reduce unsprung weight and improve power transfer. Its purple finish adds a distinctive appearance while maintaining the performance-focused construction expected from Renthal components.
The rear sprocket is manufactured from high-strength, specially enhanced 7075-T6 aluminum. This material is approximately 33% lighter than steel, helping reduce drivetrain weight without sacrificing the strength required for demanding riding conditions. The lighter construction can contribute to more responsive acceleration and efficient power delivery when paired with a compatible chain and front sprocket.
Renthal’s specialized tooth profile allows the chain to roll smoothly on and off the sprocket. This design helps promote longer chain and sprocket wear, reduce operating noise, and maintain consistent power transfer throughout the service life of the drivetrain. The 123U-520-51GYPE is designed for compatible Suzuki applications using a 520 chain configuration.
Install the Renthal 123U-520-51GYPE rear sprocket as part of a properly matched final-drive system. Confirm motorcycle fitment, chain size, tooth count, and gearing requirements before installation. Professional installation and correct chain alignment are recommended for dependable performance and long component life.

Features:

• CNC-machined construction: Precisely manufactured instead of stamped for consistent performance and fit.

• Ultra-light design: Computer-aided construction helps reduce unsprung weight and improve power transfer.

• 7075-T6 aluminum: High-strength, specially enhanced aluminum is approximately 33% lighter than steel.

• 51-tooth configuration: Supports compatible Suzuki applications using a 520 chain setup.

• Special tooth profile: Helps the chain roll smoothly on and off the sprocket for reduced noise and longer wear.

• Purple finish: Provides a distinctive appearance for performance-focused motorcycle applications.

Ships from Parts Unlimited.